EP2711181B1 - Imprimante à séchage rapide et papier synthétique écologique en polypropylène orienté de manière bi-axiale - Google Patents

Imprimante à séchage rapide et papier synthétique écologique en polypropylène orienté de manière bi-axiale Download PDF

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Publication number
EP2711181B1
EP2711181B1 EP12185659.5A EP12185659A EP2711181B1 EP 2711181 B1 EP2711181 B1 EP 2711181B1 EP 12185659 A EP12185659 A EP 12185659A EP 2711181 B1 EP2711181 B1 EP 2711181B1
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European Patent Office
Prior art keywords
weight
paper
polypropylene
synthetic paper
coating
Prior art date
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EP12185659.5A
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German (de)
English (en)
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EP2711181A1 (fr
Inventor
Allen F.C. Lin
Hong-Kuo Cheng
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Nan Ya Plastics Corp
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Nan Ya Plastics Corp
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Priority to EP12185659.5A priority Critical patent/EP2711181B1/fr
Priority to ES12185659.5T priority patent/ES2663076T3/es
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/26—Printing on other surfaces than ordinary paper
    • B41M1/30—Printing on other surfaces than ordinary paper on organic plastics, horn or similar materials
    • B41M1/305—Printing on other surfaces than ordinary paper on organic plastics, horn or similar materials using mechanical, physical or chemical means, e.g. corona discharge, etching or organic solvents, to improve ink retention
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/03—3 layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • B32B2250/242—All polymers belonging to those covered by group B32B27/32
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/10—Inorganic particles
    • B32B2264/102—Oxide or hydroxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/10—Inorganic particles
    • B32B2264/104—Oxysalt, e.g. carbonate, sulfate, phosphate or nitrate particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/41—Opaque
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/514—Oriented
    • B32B2307/518—Oriented bi-axially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/75—Printability
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2554/00—Paper of special types, e.g. banknotes

Definitions

  • the present invention relates to a quick-drying print and environmental-friendly biaxially orientated polypropylene (BOPP) synthetic paper, in particular, aims at that two different polypropylene resin composite materials, processed with one twin-screw primary extruder and two twin-screw secondary extruders respectively and then co-extruded through the same T-die to prepare a substrate film with a three-layer structure, through cooling and setting, biaxial orientation, and then coated with a non-toxic water-based primer, finally coated with a paper-like surface processing agent to become a polypropylene synthetic paper.
  • BOPP biaxially orientated polypropylene
  • a polyolefin synthetic paper based on polypropylene biaxially orientated film as the intermediate substrate layer, with its surface being laminated or coated with uniaxially oritated polypropylene films comprising inorganic salt fine powder as a paper-like surface has long been developed by Japan Yupo Corporation, and filed a patent (Japanese Patent No. 46-40794 , Japanese Publication No. 56-141339 and Japanese Publication No. 56-118437 ), and commerciallized.
  • Japanese Publication No. 50-10624 Japanese Publication No.
  • 50-161478 etc. discloses to coat 0.005 to 0.1g/m 2 of acrylic copolymer or polyethylene imine solution on the synthetic paper surface; besides, Japanese Japanese Publication No. 3-87255 discloses that 35 to 95% by weight of crystalline polypropylene with isotacticity above 98% and 65 to 5% by weight of talc and/or mica powder are extruded and bi-axially orientated as a substrate layer (middle layer), and at least one side of this substrate layer is laminated or coated another thin surface layer which is produced from an uniaxial orientation of a resin containing 20 to 90% by weight of high crystalline polypropylene with 98% isotacticity and 80 to 10% by weight of inorganic salt fine powder to constitute a composite resin synthetic paper with opacity more than 90% .
  • the synthetic papers of above Japanese Patent Publications show advantages of waterproof, tear resistance, rigidity, mechanical strength and adhesion to the printing head, however, the ink drying rate in the printing process is not so ideal that they are not widely applicable in writing and printing cultural paper.
  • the reason is that the microvoid volume and the porosity connection degree of the synthetic paper are much less ideal than those of natural papers, resulting in that the ink drying time is quite long (4-color printing takes about 8 hours) after the printing process, it is inevitable to dry the ink on synthetic paper, also the amount of stacking is limited for preventing undesired reverse printing.
  • the number of printing operators is potentially needed to increase, besides, the working space to wait for drying is necessary, and because the polypropylene uniaxially orientated film structure containing inorganic salt fine powder exhibits worse ink adhesion amount than that of the natural paper, more ink should be put into the printing machine to achieve the color saturation; meanwhile, an unique printing ink at a 3 - 4 times expensive price than that of the natural paper printing ink is needed to prevent the intrusion of the ink solvent resulting in paper deformation and dimensional change.
  • the synthetic paper of the polypropylene uniaxially orientated film structure containing inorganic salt fine powder can not widely replace the natural paper products in many applications is the long printing process and cost difference as compared with the natural paper.
  • Nisshinbo Industries, Inc. uses a surface treatment on the synthetic paper made of polypropylene, polyvinyl chloride, polystyrene or polyester film with or without orientation, although the characteristics (printability, drying property) of the resulted synthetic paper are much better than the above-mentioned synthetic paper made of polypropylene uniaxially orientated film containing inorganic salt fine powder as a paper-like surface layer, it should widely replace the cultural use of the natural paper, in fact, the manufacturing costs of this synthetic paper are quite high in various aspects, its sales in the market are not more ideal than the synthetic paper made of the polypropylene uniaxially orientated film containing inorganic salts fine powder as a paper-like surface layer, because its technology includes the use of DMF (Dimethyl formamide) solvent as a surface layer treating agent, the paper surface layer thickness after the coating is quite thick, thus the coating thickness is not less than 10 ⁇ m, the toxicity of the solvent is very strong, and the coating material hardens during processing,
  • the present applicant also provided a polypropylene resin composition through the co-extrusion of one primary extruder and two secondary extruders into the same T-die to make 3-layer polypropylene white opaque resin coated material sheet, and then after cooling, setting, biaxial orientation, corona treatment, the surface layer was coated a paper-like surface processing agent containing inorganic salts in oily organic solvents (chlorinated polypropylene, benzene), depending on the thickness, to obtain a printing quick-drying type biaxial orientation polypropylene pearl shining synthetic paper of thickness 25 to 250 ⁇ m ( US Patent No.
  • the drying time of the four-color printing ink is 10 minutes, while the drying time of the printed ink on the outer layer for avoiding the undesized reverse printing is less than one minute, so that the printing operation is entirely the same as that of natural papers, and the stacking volume control, printing plant workers increase and the waiting time for the drying operation are not necessary, besides, the ink absorbed is confined to the coating layer and does not invade into the substrate layer, therefore a general natural paper printing ink can be used; meanwhile its ink printing amount is similar to that of the natural paper, the ink volume put in the printing machine is not increased. it is thus clear that the qualities of the said inventive synthetic paper are beyond those of the generally known synthetic paper, and can widely replace the natural paper in the cultural paper application for printing and writing.
  • the inorganic salt compounds in the paper-like surface processing agent not only contain toxic chlorinated polypropylene, organic solvent benzene coating formulations, but also the synthetic paper process inevitably includes a 10 to 25M drying oven equipment at temperature of 80°C to 120°C, thereby, not only the plant and operating personnel, exposed to the solvent emission pollutants due to dryning, and industrial safety concerns this synthetic paper still contains residual traces of chlorine, benzene, for which the present applicants should re-rack their brains, conduct numerous experiments, review and improve, finally found that a biaxially orientated white opaque polypropylene three-layer structure substrate film (middle layer) is produced by one primary extruder using a resin composition composed of 90 to 40 % by weight of high crystallinity polypropylene with more than 97% isotacticity, 10 to 40% by weight of calcium carbonate composite particles (45 to 85 weight % calcium carbonate and 55 to 15 weight % polypropylene resin), 0.1 to 15% by weight of titanium
  • the purpose of the present invention is to provide a quick-drying print and environmental-friendly biaxially orientated polypropylene synthetic paper and process of making the same.
  • the present invention provides the process to produce a quick-drying print and environmental-friendly biaxially orientated polypropylene synthetic paper, including:
  • No. 1 is the extruder;
  • No. 2 is the cooling molding device;
  • No. 3 is the longitudinal orientation device;
  • No. 4 is the lateral orientation device;
  • No. 5 is the corona treatment device; and
  • No. 6 is the winder.
  • a high crystallinity polypropylene resin having isotacticity above 96% is used as the main raw material to manufacture coated substrate film, wherein polypropylene resin is selected from a high crystallinity cis-configuration (isotacticity) homopolymer with melt flow index (hereinafter abbreviated as MFI) of 2 to 6 (230°C / 2.16 Kg load according to ASTM D1238), a copolymer with propylene as the main ingredient and ⁇ -olefin, such as, ethylene, butene-1, hexene-1, heptene-1, 4-methyl pentene as comonomers.
  • MFI melt flow index
  • This copolymer is a random copolymer, and can also be a block copolymer with melt flow index (JIS K 7210; 230°C, 2.16kg load) of 0.5 to 50g/10min, crystallization degree (X-ray method) more than 20%, preferably 40 to 75%, melting point in the range of 140 to 190 °C.
  • melt flow index JIS K 7210; 230°C, 2.16kg load
  • crystallization degree X-ray method
  • the coating materials used in the present invention includes:
  • the present inventive paper-like surface processing agent includes:
  • UV absorbers In order to extend the durabilityty of the synthetic paper for the outdoor use and to prevent ultraviolet radiation and aging decomposition of the synthetic paper, a small amount of UV absorbers is incorporated in the three-layer raw materials, the dosage thereof is 1 to 2% by weight.
  • the specific gravity of the present inventive improved quick-drying print and environmental-friendly biaxially orientated polypropylene synthetic paper products is as low as 0.55 to 0.83, which is lower than 0.79 of Japanese Publication No. 3-87255 by 24% or more, and is also lower than 0.85 of Nissinbo Co., Ltd. by 29% or more, so that consumers have more area to use and thereby more economical.
  • Figure 1 is a schematic cross-section structure diagram of the synthetic paper obtained by the present inventive improved process.
  • FIG. 2 is a schematic flow chart of the present inventive synthetic paper manufacturing equipments, wherein
  • Figure 3 shows a surface layer treatment device: the surface layer treatment device can be used to coat each side or double-sides (on-line) of the coated substrate film having the thickness blow 250 ⁇ produced by the device of Figure 2 and the coated substrate film having the thickness higher than 300 ⁇ m produced by the laminatuion device of Figure 4 to form a large microvoid volume and the porosity connection degree natural paper-like paper surface layer.
  • a coated substrate film under or over 300 ⁇ m is put in the coating distribution zone ( Figure 3 (1)), then the paper-like surface processing agent is coated via a gravure coatig roll ( Figure 3(2) ) on the coated substrate film surface as the first single-sided paper-like treatment.
  • the first single-side treated coated substrate film is passed through a 10 to 25M, temperature 80 to 120 °C oven equipment ( Figure 3 (3)) between the first and the second treating rolls, and then the second single-side paper-like surface processing is carried out with the second gravure coating roll ( Figure 3 (4)). Finally, it is dried in a 10 to 25 M, temperature 80 to 120 °C oven equipment ( Figure 3 (5)).
  • the finished first surface coated substrate film is passed through the third gravure coating roll and a 10 to 25M, 80 to 120 °C temperature oven equipment ( Figure 3 (7)), finally the fourth gravure coating roll ( Figure 3 (8)) and into a 10 to 25M, 80 to 120 °C temperature oven equipment ( Figure 3 (9)) for the second surface coating and drying.
  • the above-mentioned device is a each side two coating plates single- or double-sided in-line coating machine, single- or double-sided paper-like coating is selected according to product applications, or one or two coatings on each side ;
  • the engraving depth of the gravure coating roll can be 10 to 60 ⁇ m;
  • mesh size can be 100 to 400 mesh, wherein engraving depth and mesh size can be permutated and combined.
  • Figure 4 is a multilayer laminating unit: the coated substrate films of the same or not the same two rolls having the thickness less than 200 ⁇ m are laminated; before lamination, the glue is coated on the layer surface respectively to let the thickness of the coated material sheets more than 300 ⁇ m.
  • No. (2) in Figure 4 is a glue coating roll, the type thereof (multi-lines shallow engraving or less-lines deep engraving) depends on the glue coating quantity and the viscosity of the adhesive primer.
  • the adhesive primer suitable for polypropylene lamination includes polyurethane system or other polyethylene imide, ethyl imide adducts of polyamine polyamide or quaternary ammonium containing acrylate polymers.
  • Example 1 (the double-sided printing quick-drying environmentally friendly biaxially orientated polypropylene synthetic paper having the thickness below 250 ⁇ m)
  • Example 2 (two-sided printing quick-drying environmentally friendly biaxially orientated polypropylene synthetic paper having a thickness above 300 ⁇ m)
  • Example 1 In the same way as Example 1, except that 6 ⁇ m of the coated thickness is changed to be 2 ⁇ m thickness on each side of the surface layer via the surface processing unit, the paper paper-like surface of the resulted 350 ⁇ m double-sided printing quick-drying environmentally friendly biaxially orientated polypropylene synthetic paper exhibits excellent printing resolution and easy-drying printability.
  • the characteristics of the synthetic paper obtained according to the above steps show in Table 1.
  • Example 1 80 ⁇ m
  • Example 2 350 ⁇ m Specific gravity, g/cm 2 (ASTM D792) 0.86 0.70 whiteness % (TAPPI T-525) 93 93 opacity % (TAPPI T-425) 89 98 gloss % (TAPPI T-480) 21 21 coefficient of friction (ASTM D-1894) 0.40 0.48 tensile strength kg/mm 2 (ASTM D882) MD 117 88 CD 220 147 % elongation at break (ASTM D882) MD 120 145 CD 45 40 the drying time for printing the outer layer in 1 minute in 1 minute completely dring time after printing in 10 minute in 10 minute Remarks : TAPPI-(Technical Association of Pulp and Paper Industry) MD-machine direction (longitudinal direction) CD-cross direction (transverse direction)

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Laminated Bodies (AREA)

Claims (1)

  1. Procédé pour produire un papier synthétique à base de polypropylène orienté de façon bi-axiale, écologique et à impression à séchage rapide, comprenant:
    1) une composition de résine de polypropylène comprenant 90 à 40% poids d'une cristallinité élevée, avec une isotacticité supérieure à 97% de résine de polypropylène, 10 à 40% en poids de particules composites de carbonate de calcium, 0,1 à 15% en poids de particules composites de dioxyde de titane, 0,1 à 5% en poids d'agent antistatique, 0,1 à 2% en poids d'absorbeurs d'UV et une composition de résine comprenant 50 à 99% en poids de polypropylène et 5 à 0,1% en poids d'agent anti-bloquant sont introduits dans une extrudeuse primaire à double vis et deux extrudeuses secondaires à double vis, respectivement à une température réglée à 200 à 280°C et avec un débit convergeant à travers le même filière en T et pour obtenir une co-extrusion en une feuille de matériau enduit à trois couches ;
    2) après refroidissement et formage de ce film de substrat revêtu de structure à trois couches sur un rouleau de refroidissement de 15 à 80°C, il va être orienté de façon bi-axiale c'est-à-dire préchauffé, étiré longitudinalement de 4 à 6 fois entre 100 et 160°C, recuit, puis préchauffé de nouveau, étiré latéralement 5 à 10 fois à une température de 150 à 190°C et recuit ;
    3) alors la feuille orientée de façon bi-axiale est traitée avec une décharge à effet de couronne à haute fréquence de puissance de 20 à 150KW pour obtenir un film de substrat enduit ayant une épaisseur inférieure à 250 µm, caractérisé en ce que:
    4) la feuille enduite résultante est traitée par un rouleau de revêtement par gravure d'un maillage de 100 à 400, de profondeur de 60 µm à 10 µm, avec un agent de traitement de surface de type papier composé de 8 à 20% en poids de résine acrylique, de 20 à 60% en poids de carbonate de calcium, 0,1 à 5% en poids d'argile, 0,1 à 2% en poids de dioxyde de titane, 30 à 90% en poids d'eau, 0,1 à 2% en poids d'agent antistatique, avant de passer dans un four de 10 à 25M, à une température de 80 à 120°C pour produire le papier synthétique avec une épaisseur inférieure à 250 µm.
EP12185659.5A 2012-09-24 2012-09-24 Imprimante à séchage rapide et papier synthétique écologique en polypropylène orienté de manière bi-axiale Active EP2711181B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP12185659.5A EP2711181B1 (fr) 2012-09-24 2012-09-24 Imprimante à séchage rapide et papier synthétique écologique en polypropylène orienté de manière bi-axiale
ES12185659.5T ES2663076T3 (es) 2012-09-24 2012-09-24 Papel sintético de polipropileno orientado biaxialmente, de secado rápido de la impresión e inocuo para el medio ambiente

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12185659.5A EP2711181B1 (fr) 2012-09-24 2012-09-24 Imprimante à séchage rapide et papier synthétique écologique en polypropylène orienté de manière bi-axiale

Publications (2)

Publication Number Publication Date
EP2711181A1 EP2711181A1 (fr) 2014-03-26
EP2711181B1 true EP2711181B1 (fr) 2018-03-07

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ES (1) ES2663076T3 (fr)

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Publication number Priority date Publication date Assignee Title
TW201827501A (zh) * 2017-01-26 2018-08-01 台灣龍盟科技股份有限公司 包含聚對苯二甲酸乙二酯之複合膜及其製造方法及用途
CN112226015A (zh) * 2020-10-13 2021-01-15 浙江高度环保科技有限公司 一种高分子复合卡纸及其制备方法
CN113897019A (zh) * 2021-11-05 2022-01-07 郑州启晨装潢包装科技有限责任公司 一种含有聚丙烯合成纸的可循环利用包装箱的制备方法

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Publication number Priority date Publication date Assignee Title
JPS4640794B1 (fr) 1968-03-26 1971-12-02
JPS5010624A (fr) 1973-05-25 1975-02-03
JPS5230390B2 (fr) 1974-06-20 1977-08-08
JPS6036173B2 (ja) 1980-02-26 1985-08-19 王子油化合成紙株式会社 色相の改良された樹脂組成物
JPS56141339A (en) 1980-04-08 1981-11-05 Oji Yuka Gouseishi Kk Resin composition having improved light resistance
JP2753066B2 (ja) 1989-08-31 1998-05-18 王子油化合成紙株式会社 複層樹脂フィルムよりなる合成紙
JPH08252889A (ja) * 1995-03-16 1996-10-01 Oji Yuka Synthetic Paper Co Ltd 熱可塑性樹脂積層フィルム延伸物およびそれを用いた印刷用紙
ES2185840T3 (es) * 1997-07-01 2003-05-01 Nanya Plastics Corp Proceso para fabricar un papel sintetico de polipropileno orientado biaxialmente, de alto brillo y facil secado de la impresion.
US6364988B1 (en) * 1999-09-13 2002-04-02 Nan Ya Plastics Corporation Process for producing a 3-layer co-extruded biaxially oriented polypropylene synthetic paper of thickness 25-250 μm
JP4963756B2 (ja) * 2001-02-09 2012-06-27 株式会社ユポ・コーポレーション ボイド含有熱可塑性樹脂延伸フィルムおよびその製造方法

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* Cited by examiner, † Cited by third party
Title
None *

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ES2663076T3 (es) 2018-04-11

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